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HD7950 revised with reference HD7970 PCB club - Page 57

post #561 of 847
Quote:
Originally Posted by SonDa5 View Post

Some performance results under load.


Ambient temperature 23.6C

1300/1600 with under 1.2v.

1300mhztemps.jpg



Over 2 hours of looping Heaven. Stable.
Ambient Temp 25C.

swtcichtemps.gif

Can go faster.

First110003dmark11HD7950.jpg

http://3dmark.com/3dm11/3614346

hey how did you overclock pass the msi ab limits??? frown.gif please tell me.. i have an HIS 7950 iceq x2 here
post #562 of 847
Quote:
Originally Posted by kahboom View Post

what card are you refiring too?

The gigabyte 7950 rev2.0 that demonunicorn posted the pictures of.
post #563 of 847
Thread Starter 
Quote:
Originally Posted by tuklap View Post

hey how did you overclock pass the msi ab limits??? frown.gif please tell me.. i have an HIS 7950 iceq x2 here

First off I don't use MSI AB because it doesn't work as well as TRIXX for my card.


I am using TRIXX with voltage control for GPU and memory. With the BIOS I am running on my card it is able to go fast. I have tried other BIOS for the card and it doesn't go as fast.

Keys to high speed.

1. Good stable unlocked BIOS.
2. TRIXX software that supports unlocked clock speeds and higher voltage control.
Edited by SonDa5 - 3/24/13 at 10:36am
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post #564 of 847
Thread Starter 
Quote:
Originally Posted by tuklap View Post

and you'll just void out your warranty hahaha... any thing that wont remove the heat sink just to know if it is an hd 7970 reference design board?


You can compare the back side of the PCB but its alot harder to identify everyihtng. You really need to get a visual of the PCB.


If you are considering water cooling any HD79XX card that is built on a new model number PCB IMO its a good idea to take the heat sinks off to see the lay out of the PCB to determine proper fit for water block.


Also by looking at the PCB you can get an idea of how high of quality design it is.


Referenece HD7970 PCB is very high quality.

On reference AMD PCB you can find PCB model number nomenclature data near the PCI-E connector but on newer PCB desing that is custom it is not listed so you have to get visual of PCB to verfify.


Swiftech has some good info on identifying PCB nomenclature.

http://www.swiftech.com/KOMODO-HD7900.aspx#tab3


EK has awesome http://www.coolingconfigurator.com/ WEB site compatibility tool to identify many PCB compatible blocks but doesn't cover all the cards exspecialy these newer revised cards.


I think at this point in time with all the revisions going on its a good idea to look at PCB to make certain the PCB is all kosher for proper fit of water block.
Edited by SonDa5 - 3/24/13 at 10:39am
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post #565 of 847
Erm... I heard that the Sapphire HD7950 Vapor-X is based on 7970 PCB. Is that true?
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post #566 of 847
Quote:
Originally Posted by SonDa5 View Post

First off I don't use MSI AB because it doesn't work as well as TRIXX for my card.


I am using TRIXX with voltage control for GPU and memory. With the BIOS I am running on my card it is able to go fast. I have tried other BIOS for the card and it doesn't go as fast.

Keys to high speed.

1. Good stable unlocked BIOS.
2. TRIXX software that supports unlocked clock speeds and higher voltage control.

Are you using trixx 4.4.0b mod? I am actually thinking about flashing your sapphire bios 950mhz to my vapor-x oc. Both of my cards got hynix memory as well. But they dont overclock very well.
post #567 of 847
Quote:
Originally Posted by sooyong94 View Post

Erm... I heard that the Sapphire HD7950 Vapor-X is based on 7970 PCB. Is that true?

No. Vapor-X is custom PCB.
post #568 of 847
I wonder if the msi has 6+6 power connectors what does this mean? is it old or new?

And what is the best card the gigabyte windforce or this?

Thanks
post #569 of 847
Thread Starter 
Quote:
Originally Posted by PainKiller89 View Post

Are you using trixx 4.4.0b mod? I am actually thinking about flashing your sapphire bios 950mhz to my vapor-x oc. Both of my cards got hynix memory as well. But they dont overclock very well.


4.4.0b worked well for my Sapphire 950mhz Edition HD7950.

I flashed my SAPPER BIOS to my HD7950 VAPOR X with the ELPIDA memory and it didn't post. It might work on your card if it has the Elpida memory.

I need to experiment with ATIFlash more on my Vapor X HD7950 witht he Elpida memory. I think there is a way to flash a different BIOS and leave the memory part of the BIOS as before. If I can do this my Vapor X HD7950 may over clock better with my SApper BIOS. Just need to figure out how to flash the SApper BIOS over while leaving the Elpida memory portion of the BIOS stock.


Good luck if you try it out.

Here is the BIOS.

SAPPER.zip 41k .zip file
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post #570 of 847
Thread Starter 
Quote:
Originally Posted by Fakeblitz View Post

I wonder if the msi has 6+6 power connectors what does this mean? is it old or new?

And what is the best card the gigabyte windforce or this?

Thanks

I like the MSI card better. Not sure what PCB is being used at this point in time but it looks like MSI has good history of using good quality parts and GPUS in their cards and are good over clockers.

I love my early edition Sapphire HD7950 950mhz Edition but I can't recommend it now because I see so many low ASIC quality gpus in many newer Sapphire cards and they don't over clock very well.


Sapphire just put out some new cards which may be decent and the PCB marking on it shows the proper number for HD7970 PCB.

PCB 109-C38637-00 EK list this number for reference HD7970 nomenclature.

http://www.ekwb.com/shop/EK-IM/EK-IM-3831109856178.pdf

There are two of these cards. Not sure what the difference is other than one of them cost $10 more.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202030

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202031


Though these cards show the HD7970 PCB nomenclature the photos at Newegg show only 6+6 power connector so the PCB design may not really be a reference HD7970 PCB.



HIS has 1 nice card with 8+8 power connector which looks well made and is built on reference HD7970 PCB.


http://www.newegg.com/Product/Product.aspx?Item=N82E16814161429
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